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MR 0073213
[2] H. G. Forder:
Coordinates in geometry. Auckland University College, Bulletin No. 41, Mathematics Series No. 1, 1953.
MR 0060251
[3] T. A. Springer:
The projective octave plane II. Indag. Math. 22 (1960), 89-101.
MR 0126196
[4] M. F. Smiley:
Von Staudt projectivities of Moufang planes, Algebraical and topological foundations of Geometry. Oxford-London-N. York-Paris 1962, pp. 165-166.
MR 0139996